Chapter 9 - Reactions
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1 Chapter 9 - Reactions
2 How many different elements are in: MgBr 2 NH 4 OH CH 3 OH CH 3 CH 2 OH CH 3 COOH Sr(NO 3 ) 2
3 How many atoms are represented by: K 2 S Li 3 PO 4 Sr(OH) 2 Fe(NO 3 ) 3 Al 2 (SO 4 ) 3 Mg 3 (PO 4 ) 2
4 List the elements in each compound, followed by the # of atoms of each. Ex. H 2 O H=2 atoms O=1 atom 1. C 6 H 12 O 3 6. Mg 3 (PO 4 ) 2 2. (NO 3 ) (NO 3 ) Cl 2 8. (NH 4 ) 3 4. Al 2 (SO 4 ) (CO 3 ) 2 5. (C 2 S 3 O) Al(NO 3 ) 3
5 Synthesis Reactions 1) Check reactants for diatomic 1) H 2, N 2, O 2, F 2, Cl 2, I 2, Br 2 2) Combine metal and nonmetal 3) Cross charges on product 4) Balance A + B AB
6 Synthesis Reactions 1) Check reactants for diatomic 2) Combine metal and nonmetal 3) Cross charges on product 4) Balance Sodium + oxygen
7 Synthesis Reactions 1) Check reactants for diatomic 2) Combine metal and nonmetal 3) Cross charges on product 4) Balance Potassium + Chlorine
8 Synthesis Reactions 1) Check reactants for diatomic 2) Combine metal and nonmetal 3) Cross charges on product 4) Balance Calcium + Sulfur
9 Synthesis Reactions 1) Check reactants for diatomic 2) Combine metal and nonmetal 3) Cross charges on product 4) Balance Copper (II) + Oxygen
10 Decomposition Reactions AB A + B 1. check charges on reactants 2. break apart into elements 3. check products for diatomic 4. balance
11 Decomposition Reactions 1. check charges on reactants 2. break apart into elements 3. check products for diatomic 4. balance Sodium chloride Aluminum oxide Magnesium phosphide
12 Decomposition Reactions 1. check charges on reactants 2. break apart into elements 3. check products for diatomic 4. balance Lithium nitride
13 Decomposition Reactions 1. check charges on reactants 2. break apart into elements 3. check products for diatomic 4. balance Calcium chloride
14 Decomposition Reactions 1. check charges on reactants 2. break apart into elements 3. check products for diatomic 4. balance Iron (II) oxide
15 Practice Synthesis: 1. Magnesium + phosphorus 2. Sodium + nitrogen 3. Tin (IV) + sulfur Decomposition: 4. Calcium bromide 5. Silver (I) oxide 6. Potassium iodide
16 Double Replacement Reactions AB + CD AD + CB 1) Write formulas on reactant side 2) Switch ions (outsides together, insides together) 3) Write formulas on product side 4) Cross charges 5) Balance
17 AB + CD AD + CB 1) Write formulas on reactant side 2) Switch ions (outsides together, insides together) 3) Write formulas on product side 4) Cross charges 5) Balance Sodium bromide + calcium nitride
18 AB + CD AD + CB 1) Write formulas on reactant side 2) Switch ions (outsides together, insides together) 3) Write formulas on product side 4) Cross charges 5) Balance Aluminum phosphide + lithium oxide
19 AB + CD AD + CB 1) Write formulas on reactant side 2) Switch ions (outsides together, insides together) 3) Write formulas on product side 4) Cross charges 5) Balance Gallium iodide + magnesium sulfide
20 AB + CD AD + CB 1) Write formulas on reactant side 2) Switch ions (outsides together, insides together) 3) Write formulas on product side 4) Cross charges 5) Balance 4) Iron (III) iodide + sodium phosphide 5) Magnesium oxide + sodium phosphide
21 AB + CD AD + CB 1) Write formulas on reactant side 2) Switch ions (outsides together, insides together) 3) Write formulas on product side 4) Cross charges 5) Balance 4) FeI 3 + Na 3 P FeP + 3NaI 5) 3MgO + 2Na 3 P Mg 3 P 2 + 3Na 2 O
22 Single Replacement Reactions AB + C AC + B 1) Write symbols on reactant side 2) Find out who will trade places 3) Check activity chart to see if possible 4) Switch ions (+ replaces +, - replaces -) 5) Cross charges & diatomics 6) Balance
23 AB + C AC + B 1) Write symbols on reactant side 2) Find out who will trade places 3) Check activity chart to see if possible 4) Switch ions (+ replaces +, - replaces -) 5) Cross charges & diatomics 6) Balance Potassium + aluminum phosphide
24 AB + C AC + B 1) Write symbols on reactant side 2) Find out who will trade places 3) Check activity chart to see if possible 4) Switch ions (+ replaces +, - replaces -) 5) Cross charges & diatomics 6) Balance Magnesium chloride + fluorine
25 AB + C AC + B 1) Write symbols on reactant side 2) Find out who will trade places 3) Check activity chart to see if possible 4) Switch ions (+ replaces +, - replaces -) 5) Cross charges & diatomics 6) Balance Calcium + potassium oxide Sodium iodide + bromine
26 AB + C AC + B 1) Write symbols on reactant side 2) Find out who will trade places 3) Check activity chart to see if possible 4) Switch ions (+ replaces +, - replaces -) 5) Cross charges & diatomics 6) Balance 5. Potassium + sodium nitride 6. Aluminum chloride + fluorine 7. Sodium oxide + magnesium
27 AB + C AC + B 1) Check charges & diatomic on reactant side 2) Check activity chart to see if reaction happens 3) Switch ions (ALWAYS put a positive with a negative) 4) Check charges & diatomic on product side 5) Balance 5) 3K + Na 3 N K 3 N + 3Na 6) 2AlCl 3 + 3F 2 2AlF 3 + 3Cl 2 7) Na 2 O + Mg no reaction
28 Identifying Reaction Types
29 Identifying Reaction Types
30 Identifying Reaction Types
31 Identifying Reaction Types
32 Identifying Reaction Types
33 Combustion Reactions General form is: C x H y + O 2 CO 2 + H 2 O Hydrocarbon a compound made of only carbon and hydrogen
34 Combustion Reactions 1. Put down CO 2 and H 2 O as products 2. Balance carbons & hydrogens first 3. Set up algebra problem for oxygen & solve 4. Double coefficients if necessary
35 CH 4 + O 2 --->
36 C 2 H 6 + O 2 --->
37 C 6 H 12 O 6 + O 2 --->
38 C 7 H 6 O + O 2 --->
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